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INTRODUCTION• 30 St Mary Axe, better known as the Gherkin because is floor plan resembled asliced pickle.•Flexible and environmentally sound office space in London.• London’s first ecological green tall building.• It is the second highest building in the City of London.•The site of the 30 St Mary Axe building lies at the heart of the City’s insurance district. 3 NICMAR GOA CAMPUS

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History : The former Baltic Exchange buildingThe historic building was designed in 1903.On 10 April 1992 at 9:20 pm, the building was demolishedin a Provisional Irish republican Army bomb attack.The bomb also caused damage to surrounding buildings.in 1998 with the permission of the planning minister JohnPrescott. NICMAR GOA CAMPUS 5

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Planning & Implementation• Swiss Re started developing proposals for the site in 1998.• The construction work started in January 2001.• Completion Date: September 2003• The building officially opened in March 2004• 30 St Mary Axe is situated on a site of 1.4 acres. NICMAR GOA CAMPUS 8

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Materials• 35 km of steel, 10 thousand tons were used to build the Swiss Re• 24,000 square meters of glass were used for the exterior of the building, equivalent to five football fields.• The building was designed to use recycled or recyclable materials whenever possible.• The towers exterior cladding consists of roughly 5,500 flat triangular, diamond-shaped glass panels. NICMAR GOA CAMPUS 9

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Issue• On 25 April 2005, the press reported that a glass panel 590 ft tower had fallen to the plaza beneath on 18 April.• The plaza was sealed off, but the building remained open.• Engineers examined the other 744 glass panels on the building.• The cost of repair was covered by main contractor Skanska and curtain wall supplier. NICMAR GOA CAMPUS 10

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Recent cost• In September 2006, the building was put up for sale with a price tag of GB£600 million.• On 21 February 2007, IVG Immobilien AG and UK investment firm Evans Randall completed their joint purchase of the building for GB£630 million, making it Britains most expensive office building.• i.e 5,457.34 Cr NICMAR GOA CAMPUS 12

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UNIQUE FORM The World’s 18th strangest building • The cigar shaped profile responds to the specific demands of the small site. • It appears less bulky than a conventional rectangular block • The slim base reduces reflections and increases daylight penetration • The rounded shape also prevents winds from being deflected & maintains a comfortable space in the public plaza. NICMAR GOA CAMPUS 13

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A UNIQUE FORM• Constructed on a diagrid structure• Made of 5,500 glass panels• Only piece of curved glass is the lens• Radial floor design with each floor is rotated 5°• Smaller footprint allows for a public plaza• Aerodynamic shape creates less downdraft• Building shape allows for natural light NICMAR GOA CAMPUS 14

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Sustainability & Ventilation• Differing air pressures and double skin façade allow for natural ventilation• Six spiralling light wells allow daylight to flood down onto the floors • Windows open when external temperature is between 20°C and 26°C and wind speed is less than 10 mph • Windows and blinds are computer controlled • Solar blinds to reclaim or reject heat NICMAR GOA CAMPUS 15

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Energy Use• Temperature can be controlled in several separate zones on each floor• Building can potentially turn off mechanical temperature system 40% of the year• Main energy source is gas• Building was supposed to consume 50% less energy• The building uses open windows and natural ventilation to reduce energy costs. NICMAR GOA CAMPUS 16

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SUSTAINABLE BUILDING:• The tower is aerodynamically designed to reduce wind load on the structure, whilst the lower part tapers so that wind wraps around the tower.• The six fingers of accommodation on each floor, configured with light wells in between, maximize daylight penetration.• The façade design with advance glazing technologies, ventilated cavities and blinds , provides up to 85% solar protection.• Gas is the main fuel used hence it will only generate half the carbon emission.• Overall energy serving is up to 50%. NICMAR GOA CAMPUS 17

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Circulation• Each of the two main stairwells contains 1,037 stairs.• The 23 lifts vary in velocity from 1 metre per second to 6 meters per second. NICMAR GOA CAMPUS 18

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LIFTS:• There are 18 passenger lifts in the building.• 378 people can be vertically transported through the building at speeds upto 6m per second at any time.• In addition, there are goods and firefighter elevators, as well as a car park elevator to the reception from the basement.• Two special shuttle elevators serve the top floors of the building.• KONE Alta™ fulfilled the architects’ requirements for customized elevator cars and signalization.• 3 different levels: – Low rise go from lobby to level 12. – Medium rise lifts go from lobby to 22 stopping from level 11. – High rise lifts go from lobby to 34 stopping from level 22. – Shuttle lift goes from level 34 to level 39. NICMAR GOA CAMPUS 20

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Benefits Of Project To Society• 30 St. Mary’s Axe has instantly become a symbol of London’s financial district.• Movies, filmed in London, made sure to get a few shots of the new skyline.• while tourist come to see the building, and few are lucky enough to get to the top. NICMAR GOA CAMPUS 22

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Latest technology Sustainable design was used extensively For e.g..• Windows in the light wells open automatically to augment the air conditioning system with natural ventilation.• The tower is aerodynamically designed to reduce wind load on the structure.• 30 St. Mary Axe will consume up to 50% less energy than a comparable high profile office tower as 550 triangular glass panels are used.• The cavities between the outer layer and inner screen act as a buffer-reduce air condition system NICMAR GOA CAMPUS 32

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Environmental challenges• Radial floor design with each floor is rotated 5 .• Minimum impact on the local wind environment.• environmentally progressive working environment.• Foster and Partners supports sustainable design• The atria allow natural light and ventilation into the building.• Operable windows and blinds located within the layers of glazing control the environment within.• Mechanical ventilation is decentralized and based on a floor-by-floor flexible system.• Movement and light level sensors help reduce the electric lighting consumption, and low energy light NICMAR GOA CAMPUS 33 fixtures are specified.

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Role of project manager The project manager was responsible for the following to implement the project successfully:-• Project time:- completion of project with time duration (3 months before given project duraton.• Project cost :- controlled the cost and limited it to 200,000,000 euros.• Project resources:- Specialists were hired for each departments(1998 to 2001).• Project quality :- Quality was maintained throughout the duration by using only the best resources in the market. NICMAR GOA CAMPUS 34

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Conclusion• Technology is always evolving to meet the changing needs of users and in this case it was used for efficiently.• Planning was detailed, organised, and involved team participation with specialists assigned for each activity.“Planning is bringing the future into the present so that you can do something about it now” NICMAR GOA CAMPUS 35